
Keywords: GPCRs; G protein-coupled receptors; T2Rs; bitter taste receptors; CAMs; constitutive active mutants; TM; transmembrane; PLCβ2; phospholipase Cβ2; IP3; inositol-1,4,5-triphosphate; ECL; extracellular loop; ICL; intracellular loop; G protein-coupled recep